DOI: 10.1016/j.atmosenv.2015.07.019
Scopus记录号: 2-s2.0-84937825066
论文题名: Atmospheric mercury concentrations at two sites in the Kyushu Islands, Japan, and evidence of long-range transport from East Asia
作者: Marumoto K ; , Hayashi M ; , Takami A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 117 起始页码: 147
结束页码: 155
语种: 英语
英文关键词: Atmosphere
; Carbon monoxide
; East Asia
; Gaseous mercury
; Long-range transport
Scopus关键词: Atmospheric movements
; Atmospheric pressure
; Carbon
; Carbon monoxide
; Earth atmosphere
; Pollution
; Average concentration
; Backward trajectory analysis
; East Asia
; Gaseous elemental mercury
; Gaseous mercury
; Ground-based observations
; Long range transport
; Total gaseous mercuries
; Mercury (metal)
; mercury
; sulfur oxide
; anticyclone
; atmospheric pollution
; carbon monoxide
; cold front
; ground-based measurement
; long range transport
; mercury (element)
; speciation (chemistry)
; trajectory
; air pollutant
; air temperature
; Article
; atmosphere
; atmospheric pressure
; boundary layer
; falling
; high temperature
; humidity
; Japan
; priority journal
; seasonal variation
; spring
; summer
; surface property
; wind
; winter
; Fukuoka [Kyushu]
; Japan
; Kumamoto
; Kyushu
; Minamata
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Continuous monitoring of atmospheric gaseous mercury at Fukuoka and Minamata in the Kyushu Islands, western Japan, was carried out from June 2012 to May 2013 to investigate the influence of long-range transport of mercury in the Asian region. Speciation data at Fukuoka indicated that approximately 99% of the atmospheric mercury was in the gaseous elemental form. The average concentration of gaseous elemental mercury (GEM) at Fukuoka was slightly higher than that of total gaseous mercury (TGM) at Minamata. Synchronous pollution events of higher concentrations of both GEM at Fukuoka and TGM at Minamata were frequently observed from late fall to early spring. We infer that these events occurred due to long-range transport of mercury rather than local, domestic emission sources because the two sites are far apart (about 150 km), and local sources would be unlikely to synchronously influence concentrations at both sites over such a long distance. The results of backward trajectory analyses indicated that these events occurred when air masses came from the Asian continent. In addition, the pollution events were often the result of cold fronts or migratory anticyclones that passed over the Kyushu Islands, often accompanied by descending cool and heavy air currents. Thus, these results indicate that, under specific climate conditions, higher concentrations of atmospheric mercury are transported to the Kyushu Islands from the Asian continent, and are evident in ground-based observations there. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81578
Appears in Collections: 气候变化事实与影响
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作者单位: Environmental Chemistry Section, National Institute for Minamata Disease, 4058-18, Hama, Minamata-shi, Kumamoto, Japan; Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka-shi, Fukuoka, Japan; Center of Regional Environmental Research, National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba-shi, Ibaragi, Japan
Recommended Citation:
Marumoto K,, Hayashi M,, Takami A. Atmospheric mercury concentrations at two sites in the Kyushu Islands, Japan, and evidence of long-range transport from East Asia[J]. Atmospheric Environment,2015-01-01,117